Sublimation is involved in _________ .

Options

A. incense stick and odonil.
B. camphor and incense stick
C. perfume and odonil.
D. naphthalene balls and camphor.

Explanation

**Step-by-Step Solution:**

1. **Understanding Sublimation**: Begin by defining sublimation. Sublimation is the process where a solid changes directly into a gas without passing through the liquid state.

2. **Identifying Examples of Sublimation**: Identify substances that undergo sublimation. Common examples include naphthalene and camphor. These substances can transition from solid to gas when heated.

3. **Differentiating Sublimation from Other Processes**: Clarify how sublimation differs from other phase changes. Normally, when a solid is heated, it first becomes a liquid and then a gas. However, in sublimation, the solid skips the liquid phase entirely.

4. **Recognizing Non-Examples**: Mention substances that do not undergo sublimation. For instance, an incense stick does not show sublimation as it burns rather than sublimates.

5. **Conclusion**: Based on the understanding of sublimation, the correct answer to the question "Sublimation is involved in _________" would be substances like naphthalene or camphor, which are known to sublime.

**Final Answer**: Sublimation is involved in substances like naphthalene and camphor.

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